What's our next JVM language?

Anushree Singh

Krazyglue Team

Problem Statement

Explore and study new languages to make sure we are using the most efficient one

Scope & Goals

• Understand the KG (Krazyglue) application
• Explore and find candidate JVM languages
• Refactor a part of KG to each of the candidate languages
• Compare the languages based on performance and other metrics
• Recommend a JVM language for KG

What kind of application is krazyglue:

1. Computation intensive
2. DB Intensive
3. Request driven ✔

Candidate languages

1. Clojure       Emphasis on functional programming
2. Groovy       Dynamic language with static-typing - concise, easy to learn syntax
3. Kotlin         Statically typed for JVM, Android and the browser
4. Scala         Full support for functional programming and object oriented programming

Choose a part of krazyglue to work on which:

• is of appropriate size
• is not strongly connected to other modules
• has some complex logic or language features

Point of Sale Retreiver

Why is Clojure not a good fit

• OOPs to functional programming transformation.
• Challenging to work with Spring. Works better with other frameworks - Fleet or Hiccup.
• It is aimed for multithreaded and concurrent programs.
• Syntax is very different from Java.

Non performance metrics

Results: Non performance metrics

Performance metrics

CPU Usage

↑ CPU usage = ↓ performance

 

Classes loaded

↑ Number of classes loaded = ↓ performance

 

Heap Size used

↑ heap size used = ↓ performance

 

Threads started

 

Results: Performance

Final Results

My Recommendation : SCALA

Thank you! ✌️

The presentation can be found on: https://anushreesingh.github.io/krazypresentation/

This presentation has been made using markpress (https://www.npmjs.com/package/markpress)